No abstract

Particles of the copper(I) thiosemicarbazone complex [Cu(Brcatsc)(PPh3)2Cl]$CH3CN (1), Brcatsc ¼ 2-bromo-3-phenylpropenalthiosemicarbazone, were synthesized by an ultrasonic-bath-assisted method and characterized by elemental analyses, NMR ( 1 H, 13 C, and 31 P) and FT-IR spectroscopies, X-ray powder diffraction (XRD) and scanning electron microscopy (SEM). The thermal stability of 1 was studied by thermal gravimetry analysis and its structure was determined by single crystal X-ray diffraction. The compound 1 is a mononuclear complex with the copper(I) ion coordinated in a distorted tetrahedral geometry by one S atom of Brcatsc, two P atoms of two PPh 3 , and one Cl atom. The complex involves the Brcatsc thiosemicarbazone ligand in an S monodentate bonding mode. The antibacterial activity of the ligand and its copper(I) complex was studied against two gram-positive (Staphylococcus aureus and Enterococcus faecalis) and two gram-negative (Escherichia coli and Pseudomonas aeruginosa) bacteria.

No abstract

No abstract

No abstract

No abstract

2006 Pyran derivatives R 0340 Preyssler Acid: A Mild and Efficient Catalyst for the Protection Alcohols with Dihydropyran. -A useful alternative for the preparation of Thp protected alcohols (III) includes heteropolytungstophosphate as catalyst. The method fails to convert phenols with electron-withdrawing groups. -(FEIZI*, N.; HASSANI, H.; HAKIMI, M.; Bull. Korean Chem. Soc. 26 (2005) 12, 2087-2088; Dep. Chem., Payam Noor Univ., Mashhad, Iran; Eng.) -H. Haber

No abstract